Simultaneous Nadir Overpasses (SNOs) between NPP and TERRA
TLE Epoch: 2018 4 29.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/30/2018   11:29:52   (  68.33,   6.15) 04/30/2018   11:30:50  (  68.33,   6.12)    1.01                58
 04/30/2018   12:20:34   ( -68.24, 173.58) 04/30/2018   12:20:20  ( -68.22, 173.62)    2.55                14
 04/30/2018   13:11:07   (  67.53, -18.22) 04/30/2018   13:09:57  (  67.55, -19.50)   54.35                70
 05/03/2018   03:46:47   (  68.30, 121.96) 05/03/2018   03:47:22  (  68.28, 121.94)    1.69                35
 05/03/2018   04:37:29   ( -68.20, -70.60) 05/03/2018   04:36:52  ( -68.18, -70.55)    3.27                37
 05/05/2018   19:13:08   ( -68.91,  69.61) 05/05/2018   19:14:18  ( -68.84,  70.85)   50.42                70
 05/05/2018   20:03:42   (  68.27,-122.23) 05/05/2018   20:03:53  (  68.29,-122.19)    2.91                11
 05/05/2018   20:54:23   ( -68.12,  45.28) 05/05/2018   20:53:24  ( -68.13,  45.26)    1.72                59
 05/08/2018   11:29:53   ( -68.35,-173.87) 05/08/2018   11:30:58  ( -68.34,-173.90)    1.42                65
 05/08/2018   12:20:36   (  68.24,  -6.42) 05/08/2018   12:20:24  (  68.23,  -6.39)    1.84                12
 05/08/2018   13:11:11   ( -67.76, 161.49) 05/08/2018   13:09:59  ( -67.85, 160.80)   30.71                72
 05/11/2018   03:46:47   ( -68.32, -58.06) 05/11/2018   03:47:28  ( -68.33, -58.04)    1.40                41
 05/11/2018   04:37:30   (  68.16, 109.45) 05/11/2018   04:36:56  (  68.16, 109.40)    2.25                34